Humidity in a New Home: Why Your Floors Split, Your Drywall Cracks, and the 35 to 50 Percent Rule That Prevents It

Wood moves with moisture. Dry winter air at 15 percent relative humidity shrinks every piece of wood in the house: floors gap and split, doors stop closing, trusses lift and crack the corner of the ceiling, mitres open, cabinet doors check. Humid summer air swells it all back and, past 60 percent, g

























